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Mathematical modeling of chemotaxis guided amoeboid cell swimming.
Phys Biol
May 2021
Department of Polymer Science and Engineering, University of Massachusetts, Amherst, MA, United States of America.
Cells and microorganisms adopt various strategies to migrate in response to different environmental stimuli. To date, many modeling research has focused on the crawling-based(Dd) cells migration induced by chemotaxis, yet recent experimental results reveal that even without adhesion or contact to a substrate, Dd cells can still swim to follow chemoattractant signals. In this paper, we develop a modeling framework to investigate the chemotaxis induced amoeboid cell swimming dynamics.
View Article and Find Full Text PDFCell-driven microtransport is one of the most prominent applications in the emerging field of biohybrid systems. While bacterial cells have been successfully employed to drive the swimming motion of micrometer-sized cargo particles, the transport capacities of motile adherent cells remain largely unexplored. Here, it is demonstrated that motile amoeboid cells can act as efficient and versatile trucks to transport microcargo.
View Article and Find Full Text PDFSynthetic Chemotaxis and Collective Behavior in Active Matter.
Acc Chem Res
December 2018
Institut für Theoretische Physik II: Weiche Materie , Heinrich-Heine-Universität Düsseldorf, D-40225 Düsseldorf , Germany.
The ability to navigate in chemical gradients, called chemotaxis, is crucial for the survival of microorganisms. It allows them to find food and to escape from toxins. Many microorganisms can produce the chemicals to which they respond themselves and use chemotaxis for signaling, which can be seen as a basic form of communication, allowing ensembles of microorganisms to coordinate their behavior, for example, during embryogenesis, biofilm formation, or cellular aggregation.
View Article and Find Full Text PDFEffect of Cytoskeleton Elasticity on Amoeboid Swimming.
Biophys J
October 2018
Laboratoire Interdisciplinaire de Physique, Université Grenoble Alpes, CNRS, LIPhy, Grenoble, France. Electronic address:
Recently, it has been reported that the cells of the immune system, as well as Dictyostelium amoebae, can swim in a bulk fluid by changing their shape repeatedly. We refer to this motion as amoeboid swimming. Here, we explore how the propulsion and the deformation of the cell emerge as an interplay between the active forces that the cell employs to activate the shape changes and the passive, viscoelastic response of the cell membrane, the cytoskeleton, and the surrounding environment.
View Article and Find Full Text PDFThe performance of discrete models of low Reynolds number swimmers.
Math Biosci Eng
December 2015
Department of Mathematics, University of California Irvine, Irvine, CA, United States.
Swimming by shape changes at low Reynolds number is widely used in biology and understanding how the performance of movement depends on the geometric pattern of shape changes is important to understand swimming of microorganisms and in designing low Reynolds number swimming models. The simplest models of shape changes are those that comprise a series of linked spheres that can change their separation and/or their size. Herein we compare the performance of three models in which these modes are used in different ways.
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